自动纠正无效的命令用法。

Automatically correct invalid command usage.

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例如，管理员可能处理任务中的异常(例如，无效的命令、系统崩溃)。

For example, an administrative staff could handle an exception in a task (for example, invalid order, system failure).

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tcsh提供内置变量correct，这有助于纠正无效的命令用法。

Tcsh provides the built-in variable correct, which helps you correct invalid command usage.

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